Tests/
--BehaveTest1/
----BehaveTest1.feature
----steps/
------test_steps.py
--BehaveTest2/
----BehaveTest2.feature
----steps/
------test_steps.py

import sys, os
sys.path.append('../common')
import common

Tests/
├── BehaveTest1
│   ├── BehaveTest1.feature
│   └── steps
│       └── test_steps.py
├── BehaveTest2
│   ├── BehaveTest2.feature
│   └── steps
│       └── test_steps.py
├── common.py
├── __init__.py

import Tests.common

from behave import when, then

@when("foo")
def foo(context):
    pass

@then("bar")
def bar(context):
    pass

$ behave Tests/BehaveTest*
Feature: BehaveTest1 # Tests/BehaveTest1/BehaveTest1.feature:1

  Scenario: foo  # Tests/BehaveTest1/BehaveTest1.feature:3
    When foo     # Tests/common.py:3 0.000s
    Then bar     # Tests/common.py:7 0.000s

Feature: BehaveTest2 # Tests/BehaveTest2/BehaveTest2.feature:1

  Scenario: foo  # Tests/BehaveTest2/BehaveTest2.feature:3
    When foo     # Tests/common.py:3 0.000s
    Then bar     # Tests/common.py:7 0.000s

2 features passed, 0 failed, 0 skipped
2 scenarios passed, 0 failed, 0 skipped
4 steps passed, 0 failed, 0 skipped, 0 undefined
Took 0m0.000s

:$ behave Tests/BehaveTest1/BehaveTest1.feature

import Tests.common

DIRECTORY STRUCTURE:
+-- features/
     +-- steps/   (optional, common steps)
        +-- alice.features/
         |     +-- steps/   (specific steps for alice sub features, can use common steps)
         |     +-- *.feature
        +-- bob.features/
             +-- steps/
             +-- *.feature
      +-- environment.py

features/test.feature
test_steps/
test_steps/classes
test_environment.py